Visual teaching aid

Abstract

A visual teaching aid adapted for the versatile teaching of various mathematical relationships, incremental scales, and other sequential and educational concepts. The teaching aid includes an elongated board, a plurality of elongated insert cards each being interchangeably mountable on the board and having numerical indicia on a face thereof, and at least two pointers that are supported for movement along the board for pointing selected indicia on the insert card and for movement relative to each other. The insert cards are removably mountable on the board without removal and replacement of auxiliary fastening means and can be used in conjunction with relatively small sized base or whole number insert cards to assist in drills of mathematical relationships.

What is claimed is: 
     
       1. A visual teaching aid comprising a board,   means for mounting said board on a wall, a plurality of insert cards each having a forward face defined between top and bottom peripheral edges, said insert cards each having indicia on the forward face thereof, said cards being interchangeably mountable on said board with the forward face having indicia thereon forwardly directed,   means releasably supporting said card when mounted on said board with the forward face entirely free of any obstructions from viewing,   at least one pointer, and   means supporting said pointer for movement along said board for pointing to selected indicia on the insert card mounted thereon.   
     
     
       2. The visual teaching aid of claim 1 in which said releasable supporting means supports a plurality of said insert cards on said board in overlying relation to each other with the indicia of a forwardmost insert card forwardly directed such that said pointer points to the indicia on the forwardmost insert card. 
     
     
       3. The visual teaching aid of claim 1 including at least two of said pointers, and means for supporting said pointers for selected positioning with respect to indicia on the forward face of the mounted insert card and with respect to each other. 
     
     
       4. The visual teaching aid of claim 1 in which said insert card supporting means permits mounting and removal of said insert cards on said board without removal and replacement of auxiliary fasteners. 
     
     
       5. The visual teaching aid of claim 1 in which said pointer supporting means is a single elongated track. 
     
     
       6. The visual teaching aid of claim 5 in which said board has an elongated configuration and is mountable horizontally on said wall, and said insert cards each have elongated configurations. 
     
     
       7. A visual teaching aid comprising an elongated board,   a plurality of insert cards each having different indicia on a face thereof, releasable supporting means supporting a plurality of said insert cards on said board in overlying relation to each other with the indicia of a forwardmost card forwardly directed,   a pair of identically configured pointers each having a terminal tip,   a single track for supporting said pointers for movement along a length of said board and said forwardmost insert card mounted thereon, said track supporting said pointers such that the terminal tips thereof are positioned adjacent a peripheral edge of said forwardmost insert card without obstructing viewing of indicia on the forwardmost card, said pointers being individually positionable on said track for pointing to selected indicia on said forwardmost card such that relationships between selected indicia on said forwardmost card may be selectively presented.   
     
     
       8. The visual teaching aid of claim 7 in which said insert card has a scale along the length thereof depicting known units of length proportionately larger than the actual units. 
     
     
       9. The visual teaching aid of claim 7 in which said insert card has indicia thereon depicting a legend of numbers. 
     
     
       10. The visual teaching aid of claim 7 in which said insert card has indicia thereon depicting the addition of numbers. 
     
     
       11. The visual teaching aid of claim 7 in which said insert card has indicia depicting the multiplication of numbers. 
     
     
       12. The visual teaching aid of claim 7 in which said insert card has indicia thereon in the form a temperature scale. 
     
     
       13. The visual teaching aid of claim 7 in which said insert card depicts months of the year. 
     
     
       14. The visual teaching aid of claim 7 in which said insert card depicts integers. 
     
     
       15. The visual teaching aid of claim 7 in which said insert card depicts a time sequence. 
     
     
       16. The visual teaching aid of claim 7 in which said insert card depicts the alphabet. 
     
     
       17. The visual teaching aid of claim 7 in which said insert card depicts common lines and shapes. 
     
     
       18. The visual teaching aid of claim 7 in which said insert card releasable supporting means includes a plurality of generally L-shaped, flexible retention clips each secured to an upper end of said board and each having a depending leg releasably engaging an upper peripheral portion of an insert card mounted on the board. 
     
     
       19. The visual teaching aid of claim 18 including generally L-shaped reinforcing clips mounted in overlapping relation about said L-shaped retention clips for preventing excessive bending of said retention clips. 
     
     
       20. The visual teaching aid of claim 18 in which said retention clips are made of transparent material. 
     
     
       21. The visual teaching aid of claim 19 in which said retention and reinforcing clips are made of transparent material. 
     
     
       22. The visual teaching aid of claim 19 in which said retention clips and reinforcing clips each are formed with a pair of legs which define acute angles. 
     
     
       23. A visual teaching aid comprising a board,   means for mounting said board on a wall, a plurality of insert cards each having numerical indicia on a face thereof, said cards being interchangeably mountable on said board with the face having indicia thereon forwardly directed,   means releasably supporting said card when mounted on said board,   at least one pointer,   means supporting said pointer for movement along said board for pointing to selected indicia on the insert card mounted thereon,   said pointer supporting means including an elongated track,   a slide mounted for relative movement in said track,   means for securing said pointer to said slide, and adjustable means for selectively effecting a predetermined frictional drag between said slide and track for preventing unrestricted free movement therebetween.   
     
     
       24. The visual teaching aid of claim 23 in which said slide includes a mounting flange, said pointer securing means includes a pair of laterally spaced fasteners, and said mounting flange includes dimple means disposed between said fasteners which upon tightening of said fasteners causes said mounting flange to bow about said dimple means and frictionally engage said track. 
     
     
       25. The visual teaching aid of claim 24 in which said track is formed with a forwardly extending flange for causing said pointer to be disposed angularly with respect to a forward face of said board with a pointed end thereof in close relation to said board and an insert card mounted thereon. 
     
     
       26. The visual teaching aid of claim 25 in which said bowed portion of said pointer mounting flange is engageable with said forwardly extending flange portion of said track. 
     
     
       27. The visual teaching aid of claim 24 in which said dimple means comprise a plurality of forwardly extending dimples. 
     
     
       28. A visual mathematical teaching aid comprising an elongated board,   a plurality of elongated insert cards each having different numerical indicia on a face thereof, releasable supporting means supporting a plurality of said insert cards on said board in overlying relation to each other with the numerical indicia of a forwardmost insert card forwardly directed,   a plurality of base number cards each sized smaller than said elongated insert cards and having a different single base number thereon, said base number cards being interchangeably mountable on said board in overlapping relation to said forwardmost insert card and usable in conjunction therewith   two pointers, and   means supporting said pointers for selected movement along said board for pointing to selected indicia on said forwardmost insert card and the base number card mounted thereon and for movement relative to each other for demonstration of the numerical relationships between selected numerical indicia on said insert and base number cards.   
     
     
       29. The visual teaching aid of claim 28 including insert card supporting means for permitting mounting and removal of said insert cards on said board without removal and replacement of auxiliary fasteners. 
     
     
       30. The visual teaching aid of claim 29 in which said insert card supporting means includes a plurality of generally L-shaped, flexible clear plastic retention clips each secured to an upper end of said board and each having a depending leg releasably engaging an upper peripheral portion of an insert card mounted on the board. 
     
     
       31. The visual teaching aid of claim 28 in which said pointers supporting means includes an elongated track, a slide mounted for relative movement in said track, means for securing said pointer to said slide, and means for selectively effecting a predetermined frictional drag between said slide and track for preventing unrestricted free movement therebetween. 
     
     
       32. The visual teaching aid of claim 28 in which said supporting means is a single common track for supporting said pointers for sliding movement. 
     
     
       33. A visual mathematical teaching aid comprising an elongated board,   a plurality of elongated insert cards each having different mathematical indicia on a face thereof, said cards being interchangeably mountable on said board with the face having mathematical indicia thereon forwardly directed,   a plurality of base number cards each sized smaller than said elongated insert cards and each having a different base number thereon, said base number cards being interchangeably mountable on said board in predetermined relation to one of said mounted elongated insert cards and usable in conjunction with said mounted elongated insert card,   two pointers, and   means supporting said pointers for selected movement along said board for pointing to selected indicia on the insert card and base number card and for movement relative to each other for demonstrating the mathematical relationship between indicia on said insert and base number cards.   
     
     
       34. The visual teaching aid of claim 33 in which one of said insert cards has indicia thereon depicting the addition of numbers. 
     
     
       35. The visual teaching aid of claim 7 in which one of said insert cards has indicia depicting the multiplication of numbers. 
     
     
       36. The visual teaching aid of claim 33 in which said cards each have substantially the same length as said elongated board. 
     
     
       37. The visual teaching aid of claim 36 in which a single track supports said pointers. 
     
     
       38. The visual teaching aid of claim 37 in which said track has substantially the same length as said insert cards. 
     
     
       39. A visual teaching aid comprising a board,   means for mounting said board on a wall, a plurality of insert cards each having different numerical indicia on a face thereof, said insert cards being interchangeably mountable on said board with the face having indicia thereon forwardly directed,   means releasably supporting said card when mounted on said board,   at least one pointer,   means supporting said pointer for movement along said board for pointing to selected indicia on the insert card mounted thereon,   at least one base number card sized smaller than said insert cards and having a single base number thereon, and   said base number card being selectively mounted on said board in predetermined overlying relation to an insert card mounted on said board without obstructing viewing of indicia on the underlying insert card and usable in conjunction with the underlying insert card for demonstrating the numerical relationship between the indicia on the mounted insert card and base number card.